EP0734701B1 - Articulation artificielle - Google Patents

Articulation artificielle Download PDF

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Publication number
EP0734701B1
EP0734701B1 EP96108125A EP96108125A EP0734701B1 EP 0734701 B1 EP0734701 B1 EP 0734701B1 EP 96108125 A EP96108125 A EP 96108125A EP 96108125 A EP96108125 A EP 96108125A EP 0734701 B1 EP0734701 B1 EP 0734701B1
Authority
EP
European Patent Office
Prior art keywords
joint
rotation
centres
convex
plane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96108125A
Other languages
German (de)
English (en)
Other versions
EP0734701A2 (fr
EP0734701A3 (fr
Inventor
Dietmar Prof. Dr. Kubein-Meesenburg
Hans Prof. Dr. Nägerl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HJS Gelenk System GmbH
Original Assignee
HJS Gelenk System GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25909985&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0734701(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by HJS Gelenk System GmbH filed Critical HJS Gelenk System GmbH
Publication of EP0734701A2 publication Critical patent/EP0734701A2/fr
Publication of EP0734701A3 publication Critical patent/EP0734701A3/fr
Application granted granted Critical
Publication of EP0734701B1 publication Critical patent/EP0734701B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/38—Joints for elbows or knees
    • A61F2/3868—Joints for elbows or knees with sliding tibial bearing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/3013—Rounded shapes, e.g. with rounded corners figure-"8"- or hourglass-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/30131—Rounded shapes, e.g. with rounded corners horseshoe- or crescent- or C-shaped or U-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/001—Figure-8-shaped, e.g. hourglass-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0013—Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped

Definitions

  • the present invention relates to an artificial joint according to the generic term of claim 1.
  • the invention has for its object an artificial To create a joint that only has freedom of movement in one Has joint level and at the same time a high mechanical Stability with a wide range of variations for adaptation to individual circumstances.
  • an artificial joint according to the features of claim 1. Due to the articular surfaces provided according to the invention, the Surface segments of a toroidal body are there is freedom of movement only in one of the levels, and indeed in the longitudinal plane, whereas in the perpendicular plane There is limited freedom of movement on the transverse plane is.
  • the pressure loads that occur can be caused by has mastered the use of solid materials become.
  • the advantageously existing pressure distribution body ensures a pressure-tight connection between the two joint parts and a distribution of the occurring pressure loads on a larger area, which results in high mechanical stability and allows to use materials that are less have mechanical compressive strength.
  • the joint according to the invention has, in the sagittal plane (longitudinal plane), a non-overturning, pressure-tight, dimeric chain of joints which, because of its design of the joint surfaces, has restricted freedom of movement in the frontal plane (transverse plane).
  • the centers of rotation M 81 and M 91 do not have to coincide.
  • the center of rotation M 91 can be offset in the direction of the thigh and / or laterally inwards (medially) or outwards (laterally) from the center of rotation M 81 .
  • a human knee joint consists of two joint parts, namely the medial joint part and the lateral joint part.
  • 1 shows a section through the longitudinal plane or in the sagittal plane of a joint according to the invention which can form the lateral joint part of a human knee joint.
  • the lateral joint part replaces the natural articulation between the lateral femoral and lateral tibial condyle.
  • 1 consists of the joint parts 8, 9, namely a joint head 8 and a joint socket 9, between which a pressure distribution body 10 is movably arranged.
  • the joint part 8 represents the femoral part which is rigidly connected to the bone of the lateral femoral condyle in the human body
  • the joint part 9 represents the tibia part which is rigidly connected to the bone of the lateral tibial condyle in the human body.
  • the articulated surfaces 11, 12 formed by the articulated parts 8, 9 are designed as surface segments of a toroidal body, so that the sliding surfaces 13, 14 of the disc 10 facing the articulated surfaces 11, 12 are also designed to be toroidal in adaptation to the design of the articulated surfaces 11, 12 .
  • the joint part 8 In its longitudinal plane, the joint part 8 also has a functional surface with a circular cutting contour in its longitudinal plane, this circular cutting contour having the center point or the center of rotation M 8 and the radius R 8 , so that there is a convex course of the functional surface.
  • the joint part 9 has the center M 9 or the center of rotation M 9 and has the radius R 9 , so that there is also a convex shape of the circular arc-shaped cutting contour of the functional surface.
  • the centers of rotation M 8 and M 9 are located in the associated joint parts 8 and 9.
  • the joint bodies 8, 9 each also have circular sectional contours of their functional surfaces in this sectional plane.
  • the joint body 8 has a circular sectional contour with the center point M 81 and the radius R 81 , a convex functional surface being formed.
  • the joint body 9 has the center M 91 and the radius R 91 , with a concave configuration of the circular cutting contour.
  • the centers of rotation or the center points M 81 and M 91 lie within the joint part 8 with the convex sectional contour of the functional surface, and the joint axis path of the centers of rotation M 81 , M 91 is arranged in a coincident manner in the exemplary embodiment shown.
  • the rotation centers M 81 and M 91 also do not have to coincide.
  • the center of rotation M 91 can be offset in the direction of the thigh and / or laterally inwards (medially) or outwards (laterally) from the center of rotation M 81 . It can also be seen that the centers of rotation M 81 and M 91 do not coincide with the axes of rotation X 1 , Y 1 through the centers of rotation M 8 and M 9 .
  • the circular arc-shaped functional surfaces in FIG. 1 represent a non-overturned, pressure-locking, dimeric link chain, with no freedom of movement in the frontal plane due to the toroidal shape of the link surfaces, see FIG. 2.
  • the Pressure distribution body 10 is movable.
  • the sliding surfaces 13, 14 between the pressure distribution body and the joint parts 8, 9 as small as possible Have friction to the joint parts, and also the Frictional force between the adjacent surfaces on both sides of the pressure distribution body each be the same size.
  • the size of each Contact area can be chosen by choosing the toroidal bead radii and by the design of the edge beads of the pressure distribution body can be achieved.
  • the sliding surfaces 13, 14 mirror polished.
  • FIGS. 3 and 4 show a joint corresponding to the joint according to FIGS. 1 and 2 but without a pressure distribution body.
  • the same parts are provided with the same reference numerals.
  • the condition D 0 applies here. If it is assumed here that the radius R L is the same in both joints according to FIGS. 1, 2 and FIGS. 3 and 4, one becomes expedient Select R 8 and R 81 according to FIGS. 3 and 4 larger than with the joint according to FIGS. 1, 2. This measure makes the contact area between the joint surfaces 11, 12 as large as possible.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Claims (5)

  1. Articulation artificielle servant d'endoprothése pour une partie articulaire latérale d'une articulation de genou humain, constituée d'un condyle (8) et d'une glène (9), le condyle (8) formant la partie fémorale et la glène (9) la partie tibiale, le condyle (8) et la glène (9) comportant des surfaces articulaires (11, 12) qui sont des segments de surface d'un corps toroïdal, et le condyle (8) et la glène (9) possédant des surfaces fonctionnelles avec des contours en coupe circulaires de rayons R8, R9, et la géométrie articulaire des surfaces fonctionnelles l'une par rapport à l'autre dans un plan longitudinal étant déterminée par une chaíne articulaire à deux axes articulaires qui passent par les centres de rotation M8, M9 des surfaces fonctionnelles de rayons R8, R9 des contours en coupe dans le plan longitudinal, les contours en coupe dans le plan longitudinal étant conçus sous forme convexe-convexe, de façon que leurs centres de rotation M8, M9 se trouvent dans chacune des parties articulaires correspondantes (8, 9) et que le trajet des axes articulaires entre les centres de rotation M8, M9 possède un rayon RL = R8 + R9, caractérisée en ce que la géométrie articulaire des surfaces fonctionnelles l'une par rapport à l'autre dans un plan transversal tourné de 90° par rapport au plan longitudinal est déterminée par une chaíne articulaire à deux axes articulaires qui passent par les centres de rotation M81, M91 des surfaces fonctionnelles de rayons R81, R91 des contours en coupe circulaires situés dans le plan transversal, les rapports de courbure de ces derniers étant conçus sous forme convexe-concave, de façon que leurs centres de rotation M81, M91 se trouvent à l'intérieur de la partie articulaire (8) possédant le contour en coupe convexe de la surface fonctionnelle, et la distance entre les centres de rotation est RL1 = R91-R81, sachant que R91 ≥ R81, et les centres de rotation M81, M91 ne coïncidant pas avec les axes de rotation (X1/Y1) passant par les centres de rotation M8, M9.
  2. Articulation artificielle selon la revendication 1 caractérisée en ce que, entre les surfaces articulaires (11,12), est disposé un corps de répartition de pression (10) dont les surfaces de glissement (13, 14) en contact avec les surfaces articulaires (11, 12) présentent la configuration, adaptée aux surfaces articulaires (11, 12), des segments de surface d'un corps toroidal, le corps de répartition de pression (10) possédant une épaisseur minimale (D) qui se trouve sur la ligne de jonction des centres de rotation des surfaces fonctionnelles.
  3. Articulation artificielle selon la revendication 2, caractérisée en ce que le trajet des axes articulaires entre les centres de rotation M8, M9 possède un rayon RL = R8 + R9 + D, et la distance entre les centres de rotation est RL1 = R91 - R81 - D, sachant que R91 ≥ R81 + D.
  4. Articulation artificielle selon l'une des revendications 1 à 3, caractérisée en ce que les centres de rotation M81, M91 coincident ou sont distants l'un de l'autre, de facon que le centre de rotation M91 soit décalé par rapport au centre de rotation M81 en direction de la cuisse et/ou latéralement vers l'intérieur médialement ou vers l'extérieur latéralement.
  5. Articulation artificielle selon l'une des revendications 1 à 4, caractérisée en ce que les deux surfaces de glissement (13, 14) du corps de répartition de pression (10) sont de dimensions identiques.
EP96108125A 1991-12-11 1992-12-08 Articulation artificielle Expired - Lifetime EP0734701B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4140837 1991-12-11
DE4140837 1991-12-11
DE4202717A DE4202717C1 (fr) 1991-12-11 1992-01-31
DE4202717 1992-01-31
EP92924687A EP0617595B1 (fr) 1991-12-11 1992-12-08 Articulation artificielle

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP92924687A Division EP0617595B1 (fr) 1991-12-11 1992-12-08 Articulation artificielle
EP92924687.4 Division 1993-07-05

Publications (3)

Publication Number Publication Date
EP0734701A2 EP0734701A2 (fr) 1996-10-02
EP0734701A3 EP0734701A3 (fr) 1996-11-13
EP0734701B1 true EP0734701B1 (fr) 2000-10-11

Family

ID=25909985

Family Applications (3)

Application Number Title Priority Date Filing Date
EP96108125A Expired - Lifetime EP0734701B1 (fr) 1991-12-11 1992-12-08 Articulation artificielle
EP96108124A Withdrawn EP0734700A3 (fr) 1991-12-11 1992-12-08 Articulation artificielle
EP92924687A Expired - Lifetime EP0617595B1 (fr) 1991-12-11 1992-12-08 Articulation artificielle

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP96108124A Withdrawn EP0734700A3 (fr) 1991-12-11 1992-12-08 Articulation artificielle
EP92924687A Expired - Lifetime EP0617595B1 (fr) 1991-12-11 1992-12-08 Articulation artificielle

Country Status (12)

Country Link
US (2) US5556432A (fr)
EP (3) EP0734701B1 (fr)
JP (1) JP3475274B2 (fr)
AT (2) ATE196838T1 (fr)
AU (1) AU3085992A (fr)
BR (1) BR9206921A (fr)
CA (1) CA2124447A1 (fr)
DE (3) DE4202717C1 (fr)
DK (1) DK0734701T3 (fr)
ES (2) ES2152453T3 (fr)
PT (1) PT734701E (fr)
WO (1) WO1993011720A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10343889B3 (de) * 2003-09-19 2005-02-03 Hjs Gelenk System Gmbh Künstliches Gelenk

Families Citing this family (106)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4202717C1 (fr) * 1991-12-11 1993-06-17 Dietmar Prof. Dr. 3350 Kreiensen De Kubein-Meesenburg
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FR2714819B1 (fr) * 1994-01-10 1996-03-08 Billy Jean Louis Prothèse de genou.
US6074425A (en) * 1994-01-14 2000-06-13 Biomedical Engineering Trust I Fixed bearing joint endoprosthesis
DE19521597A1 (de) * 1995-06-14 1996-12-19 Kubein Meesenburg Dietmar Künstliches Gelenk, insbesondere Endoprothese zum Ersatz natürlicher Gelenke
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JPH07501729A (ja) 1995-02-23
WO1993011720A1 (fr) 1993-06-24
EP0734700A2 (fr) 1996-10-02
DE4202717C1 (fr) 1993-06-17
EP0734701A2 (fr) 1996-10-02
EP0734700A3 (fr) 1996-11-13
ATE196838T1 (de) 2000-10-15
EP0734701A3 (fr) 1996-11-13
EP0617595B1 (fr) 1997-03-12
CA2124447A1 (fr) 1993-06-24
US5556432A (en) 1996-09-17
ES2099291T3 (es) 1997-05-16
ES2152453T3 (es) 2001-02-01
ATE149818T1 (de) 1997-03-15
DK0734701T3 (da) 2001-02-05
BR9206921A (pt) 1995-11-21
EP0617595A1 (fr) 1994-10-05
US5879390A (en) 1999-03-09
AU3085992A (en) 1993-07-19
PT734701E (pt) 2001-03-30
DE59209871D1 (de) 2000-11-16
JP3475274B2 (ja) 2003-12-08
DE59208204D1 (de) 1997-04-17

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